Israeli police say they have searched the home of the president in connection with an investigation into sexual harassment allegations against him.
Mr Katsav's office said he would cooperate with the investigation
Computers and documents were seized during the raid on Moshe Katsav's Jerusalem home on Monday, police said.
A former employee has accused the president of sexual harassment. No charges have been brought against him and he denies wrongdoing.
Police said they would question Mr Katsav on Wednesday.
Mr Katsav's office said he would co-operate with the investigation.
"The president is interested in giving his full version and in proving the lies of the serious accusations," the statement said.
Mr Katsav is a veteran member of the right-wing Likud, serving as transport minister in the late 1980s and in 1996 as minister of tourism and deputy prime minister.
He has held the office of president, a largely ceremonial role, since 2000.